Detection assembly for slag quick detection probe

Abstract

This utility model relates to a detection component for a rapid detection probe for construction waste, comprising a housing, an XRF detector, a PID detector, and a position sensor. The position sensor is fixedly connected to the outer wall of the housing. A mounting plate is provided at the bottom of the housing, and the XRF detector and PID detector are fixedly mounted on the mounting plate. The main units of the XRF detector and PID detector are disposed inside the housing. A soil-breaking drill bit is provided at the lower end of the PID detector, extending through the mounting plate to below it. A detection head is provided at the lower end of the XRF detector main unit, and is fixedly connected to the lower part of the mounting plate. The lower end of the detection head has a conical head. The detection component of this utility model for rapid detection probe for construction waste has higher integration and a simplified structure, which can significantly improve the efficiency and accuracy of construction waste detection, avoid the problem of insufficient sample volume leading to detection failure, and reduce the failure rate and equipment cost of mechanical equipment.

Description

Technical Field

[0001] This utility model relates to the field of rapid detection of solid waste pollution, and in particular to a detection component for a rapid detection probe for slag and soil. Background Technology

[0002] With the rapid pace of urban development, the amount of construction waste (hereinafter referred to as waste soil) has increased dramatically. Waste soil mainly consists of waste soil, mud, and construction debris. Currently, the common treatment methods are landfilling, recycling, and resource utilization. Because waste soil may contain pollutants such as heavy metals and organic matter, indiscriminate disposal without pollution screening may result in contaminated waste soil entering the treatment system, posing a threat to the environment and human health.

[0003] Rapid soil screening is an application scenario closely related to this project. Commonly used rapid pollutant detection equipment in the soil field includes handheld X-ray fluorescence detectors (XRF) and handheld photoionization detectors (PID), etc. These devices are mostly used in contaminated site investigations and require manual operation. Regarding the screening implementation sites, construction waste treatment sites are relatively concentrated, while building demolition sites that generate construction waste are relatively dispersed. Therefore, the inlet of the construction waste treatment site was chosen as the screening location. In actual production, the inlet throughput of construction waste treatment and disposal sites is large, requiring high speed, making the above handheld equipment unsuitable. Automated integrated online detection equipment is more necessary.

[0004] Currently, there are already construction waste sampling and detection systems for construction waste trucks available for online detection, and these systems have been put into practical production applications.

[0005] Existing soil sampling and testing systems for dump trucks use a robotic arm connected to a sampling shovel to deliver soil samples to the testing location. The robotic arm then pushes the testing equipment to the location, where the instrument analyzes the soil. After testing, the robotic arm lowers the sampling shovel to collect the sampled soil into a sample container or returns it to the dump truck. The main problems with this system are: first, the sampling shovel may not collect enough sample when the soil moisture is too high, making testing impossible; second, the use of multiple robotic arms and servo motors increases costs; and third, the testing equipment is not fully integrated, increasing the possibility of mechanical failure during the individual movement of each device to the testing location. Summary of the Invention

[0006] The purpose of this invention is to address the problems existing in the slag and soil detection system described in the background art by providing a detection component for a rapid slag and soil detection probe.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A detection assembly for a rapid detection probe for construction waste includes a housing, an XRF detector, a PID detector, and a position sensor. The position sensor is fixedly connected to the outer wall of the housing. A mounting plate is provided at the bottom of the housing. The XRF detector and the PID detector are fixedly mounted on the mounting plate. The main units of the XRF detector and the PID detector are located inside the housing. The lower end of the PID detector is provided with a soil-breaking drill bit that extends through the mounting plate to below the mounting plate. The lower end of the XRF detector main unit is provided with a detection head that is fixedly connected to the lower part of the mounting plate. The lower end of the detection head is provided with a conical head.

[0009] In the above scheme, the mounting plate is also equipped with a pH detector. The main unit of the pH detector is housed inside the casing, and a probe is provided at the lower end of the pH detector. The probe extends through the mounting plate to the bottom of the mounting plate. By setting up the pH detector, the pH value of the slag can be detected. Because the probe extends to the bottom of the mounting plate, it can be inserted into the slag to directly detect the pH value of the slag during detection.

[0010] In the above-described design, the mounting plate is further equipped with a soil moisture detector. The main unit of the soil moisture detector is housed within the casing, and a probe is located at the lower end of the detector, extending through the mounting plate to the bottom of the plate. This configuration allows for direct detection of soil moisture.

[0011] In the above scheme, the soil moisture detector is a soil moisture, temperature, and conductivity sensor. This configuration allows for more comprehensive detection of soil parameters.

[0012] In the above design, the mounting plate is equipped with a vertical fixing plate, on which the PID detector is fixedly connected. This arrangement makes the assembly of the PID detector within the housing more stable, protects the PID detector main unit, reduces its vibration, and extends its service life.

[0013] In the above scheme, an air pipe is provided at the lower end of the PID detector host, and an air pipe connector is provided on the mounting plate. The lower end of the air pipe is connected to the air pipe connector. A vent hole is provided on the soil-breaking drill bit, and the vent hole on the soil-breaking drill bit is connected to the PID detector host through the air pipe connector and the air pipe. With this configuration, when detecting slag and soil, the soil surface layer is broken by the soil-breaking drill bit, and the drill bit is inserted into the soil, causing the gas inside the soil to rise and enter the PID detector host through the vent hole and air pipe on the soil-breaking drill bit, thereby detecting the VOCs gas content in the slag and soil.

[0014] In the above-described design, a vent bolt is installed at the vent hole on the soil-breaking drill bit. The vent bolt is threaded into the inner wall of the vent hole. An airflow channel is provided inside the vent bolt, and this airflow channel connects to the vent channel inside the soil-breaking drill bit. A filter screen is installed on the vent bolt to prevent soil from entering the channel. This design ensures unobstructed airflow while preventing soil from entering and clogging the channel.

[0015] In the above scheme, the XRF detector host includes an XRF protective cover, an X-ray module, and a semiconductor detector. The X-ray module and the semiconductor detector are fixedly installed inside the XRF protective cover, which is fixedly connected to a mounting plate. With this configuration, the X-ray module emits X-rays, which are transmitted to the detection head. During detection, the detection head is inserted into the slag, and the X-rays are transmitted into the slag through a conical head. The reflected characteristic X-ray spectrum is transmitted through the conical head to the semiconductor detector, which then performs qualitative and quantitative detection of various heavy metals in the slag.

[0016] This invention has the following positive effects: 1) The detection component of the rapid detection probe for slag and soil in this invention can detect the height of the probe through a position sensor. When detecting slag and soil, it ensures that the detection head of the XRF detector and the soil-breaking drill bit of the PID detector are inserted into the slag and soil to a preset depth, guaranteeing the accuracy of the XRF detector and PID detector in detecting heavy metal content and VOCs gas in the slag and soil; 2) The detection component of the rapid detection probe for slag and soil in this invention has a higher degree of integration, reducing the probability of mechanical failure during equipment integration; it eliminates the slag and soil sampling component, slag and soil ejection mechanism, and correspondingly eliminates the steps of sampling, sample lifting, descent of sampled slag and ejection during detection, improving detection efficiency and avoiding the problem of insufficient sample volume leading to detection failure; it also reduces the use of robotic arms and servo motors, significantly reducing costs. 3) Compared with existing slag detection devices, the detection component of the rapid detection probe of this utility model does not require sampling. Instead, the detection head of the XRF detector and the soil-breaking drill bit of the PID detector are inserted into the slag for direct detection, which can make the detection more accurate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the rapid detection probe for slag and soil of this utility model.

[0018] Figure 2 This is a top view schematic diagram of the internal structure of the rapid detection probe for slag and soil of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the rapid detection probe for slag and soil of this utility model.

[0020] Figure 4This is a schematic diagram of the internal structure of the XRF detector host.

[0021] Figure 5 This is a schematic diagram of the internal structure of the XRF detector head.

[0022] Figure 6 This is a schematic diagram of the structure of a soil-breaking drill bit.

[0023] Figure 7 This is a cross-sectional structural diagram of a soil-breaking drill bit.

[0024] The reference numerals in the figure are as follows: housing 1, mounting plate 11, wire interface 12, XRF detector 2, XRF detector host 21, XRF protective cover 211, X-ray module 212, semiconductor detector 213, detection head 22, cone head 23, PID detector 3, PID detector host 31, ground-breaking drill bit 32, fixed base plate 33, clamp 34, air pipe 35, air pipe connector 36, vent hole 37, vent bolt 38, filter screen 39, position sensor 4, angle iron 41, pH value detector 5, probe 51, soil moisture detector 6, probe 61. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1 As shown, the detection components of the rapid detection probe for slag and soil of this utility model include a housing 1, an XRF detector 2, a PID detector 3, and a position sensor 4.

[0027] The housing 1 can be equipped with an attachment Figure 1 The cylindrical shell shown is preferably made of a corrosion-resistant material.

[0028] A mounting plate 11 is provided at the bottom of the housing 1. The mounting plate 11 is fixedly connected to the housing 1. The connection method can be selected as needed. For example, the mounting plate can be fixedly connected to the flange face on the lower end face of the housing by multiple locking bolts. The mounting plate 11 is a mounting plate with high strength and corrosion resistance.

[0029] A wire interface 12 is provided on the top of the housing 1. The power lines and data lines of each detector inside the housing 1 extend to the outside of the housing 1 through the wire interface 12 and are electrically connected to the external power supply and data acquisition equipment to realize power supply and data transmission.

[0030] The top of housing 1 can be directly connected to the robotic arm, or connected to the robotic arm via a connector.

[0031] Position sensor 4 is fixedly connected to the outer wall of housing 1. Position sensor 4 is used to detect the height of the rapid detection probe for slag and soil. When detecting slag and soil, it ensures that the detection head of the XRF detector and the soil-breaking drill bit of the PID detector are inserted into the slag and soil to a preset depth, thus ensuring the accuracy of the XRF detector and PID detector in detecting heavy metal content and VOCs gas in the slag and soil.

[0032] The number of position sensors 4 can be set as needed, and can be one or more, preferably according to the attached... Figure 1 In the embodiment shown, three position sensors are provided, and the three position sensors are arranged on the outer wall of the housing at equal circumferential angular intervals.

[0033] The connection method between the position sensor 4 and the housing 1 can be configured as needed, for example, according to the attached diagram. Figure 1 As shown, the position sensor 4 is fixed by the angle iron 41, and the detection head below the position sensor 4 is set above the mounting plate 11 and located outside the mounting plate 11, so that the position sensor 4 can accurately detect the height of the detection component.

[0034] like Figure 2 and 3 As shown, XRF detector 2 and PID detector 3 are fixedly mounted on mounting plate 11. XRF detector host 2 and PID detector host 31 are housed inside housing 1. The lower end of PID detector 3 is equipped with a soil-breaking drill bit 32, which extends through mounting plate 11 to below it. The lower end of XRF detector host 21 is equipped with a detection head 22, which is fixedly connected to the lower part of mounting plate 11. The lower end of detection head 22 is equipped with a conical head 23. By setting the conical head 23, the detection head can be more easily inserted into the slag, facilitating the detection of heavy metals in the slag.

[0035] The PID detector 3 is fixedly connected to the mounting plate 11. The connection method of the PID detector 3 can be set as needed, for example, it can be configured according to the attached diagram. Figure 2 As shown, a vertical mounting plate 33 is provided on the mounting plate 11, and the PID detector host 31 is fixed on the mounting plate 33.

[0036] To ensure more stable fixation of the PID detector 3, it is preferable to use clamps 34 to secure the PID detector main unit 31 to the mounting plate 33. The clamps 34 include an arc-shaped portion and a locking portion. The curvature of the arc-shaped portion corresponds to the outer shell of the PID detector main unit 31. Preferably, a positioning groove is provided on the outer shell of the PID detector main unit 31, and the arc-shaped portion of the clamp corresponds to the positioning groove. The locking portions on both sides of the arc-shaped portion extend to the front side of the mounting plate 33, and the clamps 34 are locked and fixedly connected to the mounting plate 33 by locking bolts. This method provides stable positioning of the PID detector main unit 31, protects it, reduces vibration, and extends its service life. Preferably, two sets of clamps can be provided to further improve the positioning of the PID detector main unit 31.

[0037] An air pipe 35 is provided at the lower end of the PID detector host 31, and an air pipe connector 36 is provided on the mounting plate 11. The lower end of the air pipe 35 is connected to the air pipe connector 36. A vent hole 37 is provided on the soil-breaking drill bit 32, and the vent hole 37 on the soil-breaking drill bit 32 is connected to the PID detector host 31 through the air pipe connector 36 and the air pipe 35. With this configuration, when detecting slag and soil, the soil-breaking drill bit 32 breaks through the soil surface and is inserted into the soil, causing the gas inside the soil to rise and enter the PID detector host 31 through the vent hole 37 and the air pipe 35 on the soil-breaking drill bit 32, thereby detecting the VOCs gas content in the slag and soil.

[0038] like Figure 6-7 As shown, a venting bolt 38 is provided at the venting hole 37 on the soil-breaking drill bit 32. The venting bolt 38 is threadedly connected to the inner wall of the venting hole. An airflow channel is provided inside the venting bolt 38, which is connected to the venting channel inside the soil-breaking drill bit 32. A filter screen 39 is provided on the venting bolt 38 to prevent soil from entering the channel. This arrangement ensures the smooth flow of air and prevents soil from entering and clogging the channel.

[0039] The working principle of the PID detector 3 is as follows: The PID detector (photoionization detector) uses an ultraviolet (UV) lamp light source to ionize organic matter into positive and negative ions that can be detected by the detector (ionization). Under the action of an external electric field, the ions deflect and form a weak current. Since the concentration of the gas being measured is linearly related to the photoionization current, the current signal is amplified and converted into a concentration value of "ppm" or "ppb". The PID detector has high sensitivity. Through high-energy ultraviolet light, it can ionize most organic matter and some inorganic matter. During the detection process, basic components in the air such as nitrogen, oxygen, and carbon dioxide are not ionized and do not interfere with the detection results. Therefore, it can accurately detect the VOCs content in the slag.

[0040] like Figure 2 and4 As shown, the XRF detector host 21 includes an XRF protective cover 211, an X-ray module 212, and a semiconductor detector 213. The X-ray module 212 and the semiconductor detector 213 are fixedly installed inside the XRF protective cover 211, which is fixedly connected to the mounting plate 11. With this configuration, the X-ray module 212 emits X-rays, which are transmitted to the detection head 22. During detection, the detection head 22 is inserted into the slag, and the X-rays are transmitted into the slag through the conical head 23. The reflected characteristic X-ray spectrum is transmitted through the conical head 23 to the semiconductor detector 213, which then performs qualitative and quantitative detection of various heavy metals in the slag.

[0041] The working principle of XRF detector 2 is as follows: When the atoms of heavy metal elements contained in the slag sample are irradiated by high-energy X-rays, they emit characteristic X-ray spectra with a certain energy. The energy of the characteristic X-ray spectra is measured by a semiconductor detector to analyze the concentration of heavy metals in the slag sample. Based on the principle that the pulse height of the output signal of the semiconductor detector is proportional to the energy of the incident X-ray photons, when the semiconductor detector detects the characteristic X-ray spectrum of the slag sample, each channel of the semiconductor detector counts simultaneously, enabling simultaneous measurement of multiple elements. Qualitative and quantitative analysis is performed by detecting the energy position and intensity of different characteristic X-rays.

[0042] As a preferred option, a pH detector 5 and a soil moisture detector 6 can also be installed inside the housing 1.

[0043] The main unit of the pH detector is housed inside the casing 1. The lower end of the pH detector 5 is equipped with a probe 51, which extends through the mounting plate 11 to below the mounting plate 11. By setting the pH detector 5, the pH value of the slag can be detected. Because the probe 51 extends to below the mounting plate, it can be inserted into the slag to directly detect the pH value of the slag during detection.

[0044] The pH detector 5 can be a slag soil pH meter, which consists of electrodes, a metal probe, and a function value switching device. When the slag soil pH meter is working, the metal probe comes into contact with the slag soil, measures the potential difference between the two electrodes, and infers the hydrogen ion concentration in the slag soil, thereby calculating the acidity or alkalinity.

[0045] The main unit of the soil moisture detector is housed inside the casing 1. The lower end of the soil moisture detector 6 is equipped with a probe 61, which extends through the mounting plate 11 to the bottom of the mounting plate 11. This configuration allows for direct detection of soil moisture.

[0046] The soil moisture detector 6 can detect the moisture content of construction waste using the frequency domain reflectance (FDR) method. FDR technology utilizes the characteristics of electromagnetic wave propagation in construction waste. In dry construction waste, electromagnetic waves propagate relatively quickly due to friction and damping between particles. However, when the construction waste contains moisture, the presence of moisture increases the dielectric constant of the waste, thereby reducing the propagation speed of electromagnetic waves. FDR technology infers the moisture content of the construction waste by measuring the speed of electromagnetic wave propagation.

[0047] Before use, the detection component of this novel rapid soil testing probe needs to be connected to a robotic arm. The connecting cables for the XRF detector, PID detector, position sensor, pH detector, and soil moisture detector must be connected to an external power supply and data acquisition device, respectively. During testing, the robotic arm moves the detection component above the dump truck. The PID detector's drilling bit, the XRF detector's detection head, and the probes of the pH and soil moisture detectors, located below the mounting plate of the detection component, are then inserted into the soil to be tested. The position sensor detects the insertion depth. When the predetermined insertion depth is reached, the robotic arm stops descending. The XRF detector, PID detector, pH detector, and soil moisture detector respectively detect the heavy metal content, VOCs gas content, pH value, and humidity data in the soil, and transmit the detected data to the data acquisition device. After testing, the robotic arm moves the detection component away from the soil and returns to its initial position for the next test.

[0048] The detection components of this utility model's rapid detection probe for construction waste have a higher degree of integration, reducing the probability of mechanical failures during equipment integration. Compared with existing construction waste detection devices, this utility model eliminates the construction waste sampling component, construction waste lifting component, and construction waste ejection mechanism. Consequently, during detection, steps such as sampling, sample lifting, descent of sampled construction waste, and ejection are eliminated, improving detection efficiency and avoiding the problem of insufficient sample volume leading to detection failure. Moreover, it reduces the use of robotic arms and servo motors, significantly reducing equipment costs.

[0049] Compared with existing soil and waste detection devices, the detection component of this utility model's rapid detection probe does not require sampling. Instead, the detection head of the XRF detector and the soil-breaking drill bit of the PID detector are inserted into the soil and waste for direct detection, which can improve the accuracy of the detection.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection component for a rapid detection probe for construction waste, characterized in that, It includes a housing, an XRF detector, a PID detector, and a position sensor. The position sensor is fixedly connected to the outer wall of the housing. A mounting plate is provided at the bottom of the housing. The XRF detector and the PID detector are fixedly mounted on the mounting plate. The main units of the XRF detector and the PID detector are located inside the housing. The lower end of the PID detector is provided with a soil-breaking drill bit, which extends through the mounting plate to below the mounting plate. The lower end of the XRF detector main unit is provided with a detection head, which is fixedly connected to the lower part of the mounting plate. The lower end of the detection head is provided with a tapered head.

2. The detection component for the rapid detection probe of construction waste as described in claim 1, characterized in that: The mounting plate is also equipped with a pH detector. The main unit of the pH detector is located inside the housing. The lower end of the pH detector is equipped with a probe that extends through the mounting plate to the bottom of the mounting plate.

3. The detection component for the rapid detection probe of construction waste as described in claim 1, characterized in that: The mounting plate is also equipped with a soil moisture detector. The main unit of the soil moisture detector is located inside the housing. The lower end of the soil moisture detector is equipped with a probe that passes through the mounting plate and extends to the bottom of the mounting plate.

4. The detection component for the rapid detection probe of construction waste according to claim 1, characterized in that: The mounting plate is equipped with a vertical fixed base plate, and the PID detector is fixedly connected to the fixed base plate.

5. The detection component for the rapid detection probe of construction waste according to claim 1, characterized in that: An air pipe is provided at the lower end of the PID detector host, and an air pipe connector is provided on the mounting plate. The lower end of the air pipe is connected to the air pipe connector. An air vent is provided on the soil breaking drill bit, and the air vent on the soil breaking drill bit is connected to the PID detector host through the air pipe connector and the air pipe.

6. The detection component for the rapid detection probe of construction waste according to claim 1, characterized in that: A venting bolt is provided at the venting hole of the soil breaking drill bit. The venting bolt is threadedly connected to the inner wall of the venting hole. An airflow channel is provided inside the venting bolt. The airflow channel is connected to the venting channel inside the soil breaking drill bit. A filter screen is provided on the venting bolt to prevent soil from entering the channel.

7. The detection component for the rapid detection probe of construction waste according to claim 1, characterized in that: The XRF detector host includes an XRF protective cover, an X-ray module, and a semiconductor detector. The X-ray module and the semiconductor detector are fixedly installed inside the XRF protective cover, and the XRF protective cover is fixedly connected to the mounting plate.

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